Is the word manual the same in Brazilian and European Portuguese?

Yes

The word "manual" is identical in meaning, spelling, and grammar in both Brazilian and Continental Portuguese. The only difference lies in pronunciation:

• Vocalization of the "L": In Brazilian Portuguese, an "l" at the end of a syllable is typically vocalized, sounding like a "u" (e.g., manau). In Continental Portuguese, the "l" is a clear, lateral consonant where the tongue touches the roof of the mouth.
• Vowel Quality: Brazilian Portuguese tends to have more open and distinct vowels. In Continental Portuguese, unstressed vowels are often "closed" or reduced, making them sound much shorter or more neutral.

Brazilian Portuguese Examples:

1. Eu li o manual antes de montar o móvel. (I read the manual before assembling the furniture.)
2. Este é um trabalho manual muito cansativo. (This is a very tiring manual task.)
3. O manual de instruções está faltando. (The instruction manual is missing.)
4. Ele prefere o processo manual ao automático. (He prefers the manual process to the automatic one.)
5. Precisamos de mais mão de obra manual. (We need more manual labor.)

Continental Portuguese Examples:

1. Li o manual antes de montar o móvel. (I read the manual before assembling the furniture.)
2. Este é um trabalho manual muito cansativo. (This is a very tiring manual task.)
3. O manual de instruções está em falta. (The instruction manual is missing.)
4. Ele prefere o processo manual ao automático. (He prefers the manual process to the automatic one.)
5. Precisamos de mais mão de obra manual. (We need more manual labor.)